This is the Aston Martin Valhalla, and Matt Prior drives it here on road and track. It arrives at a difficult time for Aston. The company lost nearly £500m last year will have to cut jobs and costs in an effort to turn things around. It needs to sell more cars, too and increase their average transaction price. Which is where the Valhalla comes in. This is an £850,000 mid-engined supercar/hypercar and they plan to build 999 of them. It has a 4.0-litre Mercedes-AMG V8 and three electric motors, to make a total of 1064bhp. But is it any good? Join us as we find out - please click the video player above to watch.